Behbahani Nezhad Amir, Bastan Farzad, Panjehshahin Ahmad, Zamani Mahdi
Department of Chemical and Petroleum Engineering, Tehran University, Tehran 11365-11155, Iran.
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 7571855177, Iran.
ACS Omega. 2023 Mar 7;8(11):10365-10372. doi: 10.1021/acsomega.2c08051. eCollection 2023 Mar 21.
This study is undertaken to evaluate the potential of a commercial molecular sieve to remove diverse sulfur compounds from condensate with high aromatic on an industrial scale. For the first part of this study, the adsorbent is characterized in detail using inductively coupled plasma optical emission spectroscopy, X-ray diffraction, field-emission scanning electron microscopy, and Brunauer-Emmett-Teller analysis. For the second part, dynamic breakthrough experiments on an industrial scale are performed to assess the dynamic adsorption performance of a commercial molecular sieve. Dynamic experiments show that the adsorbent effectively removes the sulfur compound from condensate that has approximately 900 ppmw S. In more detail, this commercial molecular sieve selectively desulfurizes condensate to about 12 ppmw S, and this is achieved when the concentration of non-sulfur aromatic is greater than 15 times higher than the total sulfur. As regeneration is a crucial part of the continuous adsorption-regeneration cycling process, the final part of this study is focused on finding a desorption method to avoid a sulfur concentration peak in tail gas.
本研究旨在评估一种商用分子筛在工业规模上去除高芳烃凝析油中多种硫化合物的潜力。在本研究的第一部分，使用电感耦合等离子体发射光谱、X射线衍射、场发射扫描电子显微镜和布鲁诺尔-埃米特-泰勒分析对吸附剂进行了详细表征。在第二部分中，进行了工业规模的动态突破实验，以评估商用分子筛的动态吸附性能。动态实验表明，该吸附剂能有效去除含硫量约为900 ppmw的凝析油中的硫化合物。更具体地说，这种商用分子筛能将凝析油选择性脱硫至约12 ppmw，当非硫芳烃浓度比总硫浓度高15倍以上时即可实现。由于再生是连续吸附-再生循环过程的关键部分，本研究的最后一部分重点在于寻找一种解吸方法，以避免尾气中出现硫浓度峰值。
